The System Li-Al-Ag

Before this work was undertaken, only Pauly s data and Pearson s structure report on Li2AlAg were available [40, 41]. The original paper of Pauly, based on X-ray powder pattern interpretations, reports Li2AlAg to crystallize as two cubic polymorphs (F43m and Fd3m, a=6.350 A). We have recently discovered two further compounds in this system LiAlAg2 and LiyAl4Ag [42]. 

Seemingly, atomic substitutions in this system have little influence on the structural arrangement and do not modify the electronic properties significantly. 

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